For those who aren't familiar with it, you can read about it here:
https://en.wikipedia.org/wiki/Ancien...aut_hypothesis
Basically it's the idea that extraterrestrials visited Earth and made contact with our ancestors long ago.
I think it is probably true. It's one way of explaining, among other things, how and why humans were able to make the incredible leap in intelligence that no other species on this planet has been able to make. I know there's not much evidence for it, but there's not much evidence for
any hypothesis that attempts to explain that, so it is just as viable as any other explanation at this point.
I believe Giorgio A. Tsoukalos (a leading ancient astronaut theorist) is an absolutely brilliant mind and, while he may be off about certain stuff, I think humanity could get a better sense of where we came from and how we got to this point if we were to take some of his ideas more seriously.